Ruh-roh, looks like the Associated Press uncovered what every US airline passenger already knows - the airlines are nickel and diming its customers to death with bag check fees.

These fees were introduced in 2008 as a way to offset the rising cost of fuel. It's been a cash cow for the airlines who collected $3.4 billion in fees last year, up 24% since 2009. Delta Airlines, which recently charged an Army unit $2800 in bag checking fees, was the leader and racked up an impressive $952 million. [AP]